[Spiritual creature contract ceremony.]

This is the recorder of this document's understanding of the ceremony.

A prompt that the experience value increases floats in front of you shows that the content of the ceremony is real and effective.

But the materials and research of the recorder made Martin feel strange.

[The materials needed are very special. First of all, a thing brought from the spiritual world is needed to serve as a medium for connecting the spiritual world.]

[Then is a spiritual material to provide energy.]

【In addition, two to three materials can be provided to specify spiritual creatures that require contracts.】

[These materials will influence each other. Even if a slight change, the results will be completely different. The summoned spiritual creatures are all kinds of strange.]

[So, any fixed formula is very rare. Currently, there are three successful records in my current record...]

[The most important point is that you must not conduct experiments by yourself before you make sure that the spiritual creatures are harmless. The spiritual creatures are too dangerous..."

By chance, the content of the experimental formula was missing due to the broken paper.

However, Martin immediately thought of Mr. Karan, who was knowledgeable and knowledgeable.

Maybe...he knows something.

After packing up the dishes, Martin and Tiya came to the manor and also met Karan and Sofia who were waiting in the teaching room.

Due to the abnormal moonlight, it is very inconvenient to move at night.

In addition, the content of the astronomy class has been explained almost all the time. Sophia needs mathematical knowledge, so now they are also formal students of Martin.

There was no chemistry class in the afternoon, and Martin asked the students to review their math and physics knowledge.

Then he and Mr. Karan talked about the ceremony alone.

After looking at the slightly broken piece of paper, Karan pondered, "This should be a ritual in the spiritual realm. I have only heard of it, but this is the first time I have seen the specific content."

Martin raised his eyebrows slightly, and even Mr. Karan did not know the specific content of the ceremony should be relatively rare.

Karan stopped to think for a while as he looked at the yellowed paper.

After about ten minutes, he spoke again: "The mantra part, the object of prayer is an unrestrained person and the king of spirits. These titles point to Modes, so there should be no problem. However, the focus of this ceremony is on the materials."

"You should know that in fact, most of the materials in the ritual can be replaced by themselves. The key is to understand the meaning behind the materials. This ritual actually illustrates this."

Martin touched his chin thoughtfully: "Different materials will attract different spiritual creatures and lead to different consequences..."

Karan nodded and said, "If there is no fixed formula, I don't recommend you to perform this ritual. Because the creatures in the spiritual world are so strange that they are too unpredictable."

Martin actually has some of his own ideas about this.

First of all, the [Cunning Disguise] he burned can create an illusion.

Like a clone, illusion can use all abilities and extraordinary items.

The only disadvantage is that defense is equal to zero.

Once attacked or discovered, it will disappear immediately.

Martin has also experimented with it, and the illusions created can also be used for rituals!

So, he avoided the biggest trouble.

Secondly, after visiting the spiritual world for so long, he read the "Travels of the Spiritual World" by the Lord of Space. Martin believes that he has a good understanding of spiritual creatures.

Being able to enter and exit the spiritual world freely is his greatest advantage.

Judging from the description on the record, the messenger after signing the contract has excellent ability to deliver messages.

Most spiritual creatures can use the unique characteristics of the spiritual world to deliver letters directly to someone's hands.

The speed depends on the spiritual creatures, but as long as the spiritual creatures are not too slow, they can basically be delivered within two hours.

Although it is not as good as mobile phones and the Internet, it is also very rare in this era.

Between Annu Fortress and Faralinburg, such a tool that can communicate in a timely manner is urgently needed.

Martin has also considered getting the radio out, and this thing is also placed on Gladys' research and development list.

Martin is very clear about the general principle of radio transmission information. The transmitter modulates the information into the radio wave, and the receiver demodulates it after receiving the signal to obtain the information.

Martin is familiar with signal modulation and demodulation, which is one of his professional fields.

Digital signal processing studied in college is one of the compulsory courses in the computer department.

But that is a high-end operation achieved by using computers. Now he doesn't even have a computer, so he doesn't need such complex theoretical knowledge.

Martin only needs one of the most insignificant radio transmitters and one that can accept radio signals.

Simply put, it is the transmitter and radio.

But even the simplest radio requires a lot of electronic components.

Although Glace has been taught some electrical knowledge in advance, it is far from enough.

At present, Gress is not clear about how tools should be used to achieve Martin's requirements.

Thinking of this, Martin suddenly realized a problem.

Radio is essentially electromagnetic waves, and it is also a kind of invisible light...

And Karan's realm is light!

The old man looked at Martin holding his chin and rubbing his fingertips with his fingertips, thinking about something, and did not disturb him, but waited quietly.

A few minutes later, Martin came to his senses.

"Mr. Karan, can you sense radio... that is, electromagnetic waves with different frequency from visible light?" he asked carefully.

Karan looked at the paper that recorded the contents of the ceremony in his hand, and was very confused by Martin's jumping thinking.

Aren't you discussing the ceremony?

Why did the topic suddenly increase his abilities?

However, Karan nodded.

"This ability is probably what kind of light sequence can you have?" Martin asked again.

Mr. Taran did not hesitate and directly replied: "It's probably Sequence 8! When you reach this state, you can feel some light that is invisible to the naked eye."

Martin rubbed his fingers, and the frequency of visible light was very high, and he didn't remember the exact amount.

This also leads to limited propagation distance of visible light and is easily blocked by obstacles.

Even without mountains, the dust in the air will quickly attenuate the intensity of light.

The reason why radios can transmit far is that they are low in frequency and long in wavelength.

"If the frequency is reduced, what kind of electromagnetic waves can you emit?" Martin once again raised a question.

Karan frowned. He was not very easy to answer this question because he had no idea about frequency.

The frequency of electromagnetic waves is based on the concept that only occurs when the speed of light has been measured.

Martin also reflected this, and suddenly saw the gold nuggets on the table. His thoughts moved and his thoughts suddenly became clear.

He immediately took out a gold coin from his arms, and the ceremony was attached with the Eye of Light.

"Can the Eye of Light store these low-frequency electromagnetic waves?" Martin asked again.

Karan was confused by Martin's jumping thinking, but he thought for a moment and replied: "This should be OK... I don't know, but I can experiment."

"Stop doing the test, let's do an experiment." Martin rubbed his hands, pulled Tia and Mr. Karan to the yard.

Several students were also very curious and took the opportunity to be lazy and came to the side to watch with anticipation.

Martin took out a gold coin first, and there were materials. He held a ceremony on the spot for [Eye of Light].

Today is just cloudy, and the influence of sunlight can be eliminated.

"Come on, shine it with the lowest frequency electromagnetic wave!"

Martin handed the gold coins to Karan.

Karan activated his ability, and Martin felt the fluctuations.

But to the naked eye, the old man held the gold coins in his left hand and held the gold coins in his right hand.

There was some middle-aged action, and nothing happened.

A few minutes later, the old man coughed and handed the gold coins back to Martin in awkward manner.

[Gold Coin: General Currency of Gapher Empire]

【Attached ceremony: Eye of Light】

【Effect:……】

【Current charging time: 2 minutes.】

The students didn't understand what Martin was going to do, and looked at him with confusion.

Gress vaguely guessed something and lowered her head and thought.
To be continued...